Power-transmission gearing.



No. 733,076, PATENTED JULY 7, 190 3. 0. G. NYE & F. E. JENKINS.

POWER TRANSMISSION GEARIN G.

APPLICATION nun JAN. 10, 1993.

" 1:0 MODEL. 7 V 3 SHEETS-SHEET 1.

1 l I J 2a 11' 3' n M l a 7 1.3 7 i 2 E WW t 77%) g an en ms w i fi No. 733,076- PATENTED JULY 7, 1903 U G. NYE & F. E. JENKINS.

POWER TRANSMISSION GEARING.

; APPLICATION FILED JAN. 10. 1903. N0 MODEL, 3 SHEETS-SHEET 2.

No. 733,076. N PATENTED JU Y 7, 1903.

N a. G. NYE & F. E. JENKINS.

POWER TRANSMISSION GEARING.

APPLICATION FILED JAN 10, 1903.

N0 MODEL; 3 SHEETS-SHEET a.

UNITED STATES PATENT reamed Jilly 2, 1963.

FFICE.

CLARENCE e. NYE AND FR NK E. Jenkins, OF oo'LUMBUs, OI-HO;

POWER-TRANSMISSION GEARING.

SPEGIFIGATION forming part of Letters Patent No. 733,076, dated July 7, 190 3.

Application filed January 10, 1908'. Serial lilo. 133,537. (No model.)

T0 aZZ whom it may concern.-

Be it known that we, CLARENCE G. NYE and FRANK E. JENKINS, citizens of the United States, residing at Columbus, in the county of Franklin and State of Ohio,have invented certain new and useful Improvements in Power- Transmission Gearing; and we do hereby declare the following to be'a full, clear, and eX- act description of the invention, such as will enable others'skilled in the art to which it appertains to 'make and use the same.

. The object of this invention is to provide a simplified gearing for the transmission of power in either of two directions from a shaft rotated in one direction.

The invention is particularly useful in motor-vchicleswhich are to be moved either forwardorbackward; but the invention is not by any means limited to this use. 7

The invention consists in the improved construction hereinafter described and claimed.

In the accompanyingdrawings, Figure 1 is a central sectional view, a few parts being'in full. Fig. 2 is an elevation looking at the right-hand side of Fig. 1; Fig. 3 is a sectional view on the line aa, Fig. 1, looking toward the left of Fig. 1. Fig. 4 is an enlarged view of the interior of the gearing, the main shaft and pinion-shafts being in section.

In the several views, 1 designates the powershaft, which is to be driven in one direction. The shaft 1 has keyed to it a spur-gear 1. Turning loosely on the shaft 1, on one'side of the spur-gear 1, is an internally-toothed flanged disk or part 2, and on the opposite side a disk 2, carrying journaled pinions 2 The pinions 2 mesh with the internally toothed part 2 and with the gear 1. The sleeve of the part2 and the sleeve of the disk 2 havethreaded to their ends disks 3 and 3, formed with circumferential rims.

4 designates an outer casing inclosing the parts 2 and 2 and having at opposite sides thereof flanges. 5' and 5. Supported within the flanges 5 and 5 on pins 6 and G, secured in the disks 3 and 3, are split friction-rings 7 and 7. Working between the free ends of the friction-rings 7 and 7 are wedges 8 and 8, having shanks journaled in and protruding through the disks 3 and 3. Secured to the outer ends of the shanks of the wedges S and S are arms 9 and 9, the free ends of which are furnished with antifriction-rollers. 011

the free ends of the friction-rings 7 and 7, V

which are thus bound or clutched against the inner sides of the flanges 5 and 5'. On the outer sides of the rims of the disks 3 and 3 are clutching-straps 11 and 11. As seen in Fig. 2, these clutching-straps are split. rings, one end of each of which has a suitable projection 11 to be fixed in the frame of the vehicle or machine,while the other end has hung to it a lever 12, connected by a link 12 with the fixed end of the clutch-strap. By forcing inward the lever 12 the strap can be tightened against the rim of the disk that it encircles.

In practice means will be provided which,

moved in one direction, will simultaneously operate the clutch 10 and strap 11 and, moved in the opposite direction, will simultaneously operate the clutch 10 and strap 11, the intermediate position being such that the straps and clutching devices are free. We have not shown this means, because its provision is within the domain of the skilled mechanic and is not of our invention.

The outer casing can be provided with a sprocket-wheel 13 or other device for transmitting the power to the object to be operated.

The operation is as follows: Let it be supposed that the shaft 1 is running in the direction indicated by the arrow at the righthand side of Fig. 1 and the other parts loose. If the collar 10 be moved inward and the clutch 7 clamped against the rim 5 and the strap 11 clamped, the outer casing at will be carried in the direction oppositethat of the shaft, because the disk 2 will be held stationary. If, on the contrary, the clutch 7 and strap 11 be released and the collar 10 be moved inward and the clutch 7 clamped against the flange 5and the strap ll'clamped against the rim of the part 3, the part 2 will be held stationary and the outer casing 4 carried in the direction of the shaft, because the strap 7 binds the casing 4 to the moving disk 2. 7

What we claim, and desire to secure by Letters Patent, is

1. In a power transmitting gearing, the

combination ofla shaft, a spur-gear thereon, an internally-toothed part on said shaft having a friction-rim, a friction-strap therefor, a disk on said shaft, a'pinion on said disk meshing both with the aforesaid spur-gear and the internally-toothed part, said disk also having a friction-rim, a strap therefor, an outer easing having friction-flanges, spring-clutches to engage said flanges and means for operat ing said clutches and frioti0n-straps.

In a power-transmission gearing, the combination of a shaft, a spur-gear thereon, an internally-toothed part on said shaft, a friction device to engage said internallytoothed part, a disk on said shaft, a pinion on CLARENCE Gr. NYE.- FRANK E. JENKINS.

Witnesses:

C. J. HU'rsoN, GEO. M. FINCKEL. 

